CN206661389U - A kind of high electric field pulse ore crushing apparatus for ore pretreatment - Google Patents
A kind of high electric field pulse ore crushing apparatus for ore pretreatment Download PDFInfo
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- CN206661389U CN206661389U CN201720339878.7U CN201720339878U CN206661389U CN 206661389 U CN206661389 U CN 206661389U CN 201720339878 U CN201720339878 U CN 201720339878U CN 206661389 U CN206661389 U CN 206661389U
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Abstract
The utility model is a kind of high electric field pulse ore crushing apparatus for ore pretreatment, and the ore belonged in mineral processing crushes pre-processing device technical field.Its device mainly includes power supply, single-phase voltage regulator, exchange ignition transformer, six voltage doubling rectifing circuits, super-pressure ceramic capacitor, gas switch, high-field electrode, conductive cylinder, electric discharge muck bucket, vibration screen, dielectric, solid-liquid separator and product collector etc., and above each unit is fixedly mounted by wire and other auxiliary devices and connects into a complete device systems.Ore alternative dissociation after the present apparatus is handled is broken, and running crack and crack are produced on ore internal mineral interface, and then improves mineral cleavage characteristic, reduces subsequent treatment energy consumption, while avoids the overground of valuable mineral, improves separation index.
Description
Technical field
The utility model belongs to ore and crushes pre-processing device field, and in particular to a kind of high pressure for ore pretreatment
Electric pulse ore crushing apparatus.
Background technology
Mineral Resources in China is in the majority with lean ore, and mineral deposit symbiosis, Associated Constituents are more, and ore forms complex and disseminated grain size
Carefully.Therefore, the ore dressing work of China's ore faces that difficulty is bigger, efficiency is low and the problems such as cost is high.Wherein ore reduction
Field sixty-four dollar question has：The investment of broken and grinding attachment and maintenance cost are very high, energy consumption is big, produce and excessive can not handle
Fine fraction and dissociate insufficient coarse fraction, increase the difficulty of follow-up sorting operation.
Breaking method is mainly mechanical crushing used by industrial at present.Mechanical crushing is the granularity by reducing ore
To make valuable mineral be dissociated with gangue mineral, for valuable mineral and the compact ore of gangue mineral, Mechanical Crushing is broken
Easily occur the overground of valuable mineral during broken, under recovery ability of the method for separating to valuable mineral is with the reduction of granularity
Drop, make part valuable mineral loss, effective recovery can not be obtained.
Valuable mineral and gangue mineral (iron mineral and quartz mineral in such as iron ore) electric conductivity in ore has obvious poor
It is different, based on this conductivity difference selective crushing ore effect high electric field pulse ore crushing apparatus research and development have it is important
Meaning.On the basis of valuable mineral quality is ensured, operation cost of enterprises is saved, reduces the waste of resource.
Utility model content
For existing machinery crushing technology above shortcomings, the purpose of this utility model is that providing one kind has choosing
The high electric field pulse electric discharge ore crushing apparatus of selecting property breaking ores effect.It is non-that the present apparatus is based on useful metal mineral and gangue in ore
Metalliferous mineral conduction property is different, valuable mineral crystal grain is obtained fully dissociation by selective crushing, i.e., valuable mineral is by crystalline substance
Grain is broken into mono mineral particle, it is ensured that monomer dissociation valuable mineral granularity and quality can meet follow-up separation work in milling product
The requirement of skill, reduce subsequent treatment energy consumption.
A kind of high electric field pulse ore crushing apparatus for ore pretreatment provided by the utility model are as shown in Figure 1, main
Will be by power supply, single-phase voltage regulator, exchange ignition transformer, six voltage doubling rectifing circuits, super-pressure ceramic capacitor, copper rod, high pressure
Electrode, conductive cylinder, electric discharge muck bucket, vibration screen, dielectric, to ore storage bin, dielectric storehouse, earth lead, solid-liquid separator,
Product collector, gas switch, high-voltage conducting wires, insulation bung, dielectric circulating line, vibrating device, insulation vibrating arm composition,
Wherein power supply belongs to daily power supply unit, and power supply is connected with single-phase voltage regulator, and single-phase voltage regulator is again with exchanging ignition transformer
It is connected, exchange ignition transformer output six voltage doubling rectifing circuits of termination, six voltage doubling rectifing circuit output ends and super-pressure are ceramic
The input of capacitor is connected, and the both ends of super-pressure ceramic capacitor and the both ends of gas switch are in parallel, and are constituted with this
The high-voltage rectifying oscillating circuit of high electric field pulse can be exported, the output end of high-voltage rectifying oscillating circuit is the super-pressure after parallel connection
Ceramic capacitor output end is connected with high-voltage conducting wires, and one end of multiple copper rods is connected in parallel on high-voltage conducting wires, the other end of copper rod
High-field electrode is installed, the insulation burrel that copper rod insulating mounting is held within the top of electric discharge muck bucket covers, and is provided with
One end of high-field electrode is placed in electric discharge muck bucket；The outer layer of electric discharge muck bucket is made up of insulating materials, wherein with nylon material
It is preferred, the liner of electric discharge muck bucket is inlaid with conductive cylinder, and the top of electric discharge muck bucket is tubular, and bottom is back taper, its cylinder
Shape and the transition part of back taper are that tubular bottom is provided with vibration screen, solid in the upper portion insulating partial sidewall of muck bucket of discharging
Surely there is vibrating device, and be connected with vibration screen by the vibrating arm that insulate；Discharge muck bucket conical lower portion by discharging opening and
Conveyance conduit is connected with solid-liquid separator, and solid-liquid separator is followed by product collector and dielectric circulating line, and discharge muck
Have dielectric entrance and an ore inlet in the upper portion side wall of bucket, wherein dielectric entrance by pipeline with dielectric storehouse phase
Connection, ore inlet are connected by chute or feeding belt with to ore storage bin；One end of earth lead passes through electric discharge muck bucket
Outer layer is connected with its internal conductive tube body phase, and the other end of earth lead is directly grounded the loop for forming whole circuit.
During work, startup power supply power supply, through single-phase voltage regulator transformation, the boosting of exchange ignition transformer and six voltage multiplying rectifiers electricity
High voltage direct current is exported after the rectifier boost of road, is charged to super-pressure ceramic capacitor, the rise time of charging voltage is microsecond amount
Level, after the voltage at super-pressure ceramic capacitor both ends reaches certain value, the breakdown conducting of gas switch in parallel therewith, output
Rise time in the high electric field pulse of nanosecond order, is loaded into copper rod through high-voltage conducting wires and is transmitted on high-field electrode；High-tension electricity
Pole and conductive cylinder material use stainless steel, and insulation cylinder material is nylon.Conductive cylinder is grounding electrode, by earth lead with
The earth connects；The tubular bottom of electric discharge muck bucket is provided with vibration screen, and vibration screen is put by the vibrating arm that insulate with being fixed on
The vibrating device of electric muck bucket upper portion insulating partial sidewall is connected, and screen size can be adjusted as requested；High-field electrode
For high electric field pulse input, the high electric field pulse that high electric field pulse electric discharge device is formed is output to be placed on by high-field electrode leads
On bulky grain ore in torch body, and it is connected earth lead with conductive cylinder and forms loop.High-field electrode and conductive cylinder it
Between form voltage difference；When the voltage on high-field electrode reaches certain value, then occur between high-field electrode and conductive cylinder
Electric discharge, electric discharge occurs inside the ore being immersed in dielectric, under being acted in nanosecond pulse, using water as dielectric
Dielectric strength is more than ore, so being concatenated to form plasma along between valuable mineral and gangue mineral interface inside bulky grain ore
Body passage, then can be the bulky grain ore deposit that grain graininess is 10-100mm between high-field electrode and conductive cylinder after multiple discharge
Stone is crushed to the little particle ore that grain graininess is 5-60mm, and little particle ore falls into electric discharge muck after vibration screen sieves
Bottom of the barrel centrum bottom, discharge outside electric discharge muck bucket and enter in solid-liquid separator with a small amount of dielectric after precipitation, by solid-liquid
The little particle ore that separator is isolated enters product collector, in case being used continuously during follow-up broken, grinding operation.Final
Grain size depends on the size of sieve aperture, and slot size can be adjusted as requested.
The high electric field pulse ore crushing apparatus that this item utility model is completed should be used as follows.
(1) Vibration on Start-up device, by insulating, vibrating arm drives vibration screen to vibrate；Its vibration frequency is 300~1200
Secondary/min, the discharging opening valve positioned at electric discharge muck bottom of the barrel is closed, opens the valve of dielectric entrance and ore inlet respectively,
A number of dielectric and bulky grain ore are imported into electric discharge muck bucket, wherein the volume of dielectric and bulky grain ore
Than should be 1：2~5；Above-mentioned two are closed when dielectric and bulky grain ore are filled into 2/3 to the 3/4 of electric discharge muck bucket total measurement (volume)
The valve of individual entrance；
(2) startup power supply is powered, and through single-phase voltage regulator transformation, the boosting of exchange ignition transformer and six voltage doubling rectifing circuits are whole
High voltage direct current is exported after stream boosting, is charged to super-pressure ceramic capacitor, it is then continuous to high-field electrode by subsequent conditioning circuit
Electric pulse is conveyed, and sends bulky grain ore to, it is shattered broken.Its pulse strength is 50~300kV, pulse frequency 10
~20Hz；
(3) the dielectric entrance and ore inlet of electric discharge muck bucket are again turned on after startup power supply power supply after 10~15min
Valve, while open its discharging opening valve, control the flow of dielectric and bulky grain ore, ensure exhausted in electric discharge muck bucket
The volume ratio of edge liquid and bulky grain ore remains 1：2~5, the loading of dielectric and bulky grain ore is total for electric discharge muck bucket
The 2/3~3/4 of volume；
(4) the discharging opening valve for opening electric discharge muck bucket simultaneously, starts and is attached thereto logical solid-liquid separator, separation of solid and liquid
The little particle ore that device is isolated enters in product collector, in case follow-up use, isolates dielectric through dielectric circulation pipe
Road is returned among dielectric storehouse, is recycled.
Compared with prior art, the characteristics of the utility model and beneficial effect is：
Traditional sample broke device is contrasted, the broken of this high selectivity has many good qualities：Easily cleaning, does not intersect
Pollution；Selective crushing, mineral crystal form etc. is not destroyed.It is optimal along brilliant failure mode that electric pulse is broken, can not only make ore deposit
Stone is crushed, and running crack and crack are produced on ore internal mineral interface, and then improves mineral cleavage characteristic.Ore passes through
After high electric field pulse is broken, one side ore strength can substantially reduce, it is contemplated that reduce ore grinding energy consumption more than 30%；Another aspect energy
Make boundary breaking of the ore along different minerals, considerably increase the liberation degree of minerals of valuable mineral, be favorably improved ore point
Select index.Main innovation point of the present utility model is：
(1) structure design of multi-pair electrodes realizes high efficiency and the company of high electric field pulse electric discharge ore crushing apparatus breaking ores
Continuous property.
(2) screen mesh size can be changed according to the requirement to breaking ores granular size, meets broken, grinding operation demand.
(3) the broken equipment of high electric field pulse electric discharge can be dissociated ore along mineral grains interface, i.e. selective crushing,
Rather than crushed, so can be while original form of component be kept by other components of the valuable mineral from surrounding
Separate.
(4) the broken equipment of high electric field pulse electric discharge can produce in the case of valuable mineral grain graininess in not reducing ore
Raw more mono mineral particles, compared to mechanical crushing, the valuable mineral content of crushed product can be improved, improves crushed product
Liberation degree of minerals, be advantageous to the reduction of subsequent treatment process energy consumption, save entreprise cost.
Brief description of the drawings
Fig. 1 is a kind of high electric field pulse ore crushing apparatus structural representation for ore comminution pretreatment, in figure：1 is electricity
Source, 2 be single-phase voltage regulator, and 3 be exchange ignition transformer, and 4 be six voltage doubling rectifing circuits, and 5 be super-pressure ceramic capacitor, and 6 are
Copper rod, 7 be high-field electrode, and 8 be conductive cylinder, and 9 be electric discharge muck bucket, and 10 be vibration screen, and 11 be dielectric, and 12 be to ore deposit
Storehouse, 13 be dielectric storehouse, and 14 be earth lead, and 15 be solid-liquid separator, and 16 be product collector, and 17 be gas switch, and 18 are
High-voltage conducting wires, 19 be insulation bung, and 20 be dielectric circulating line, and 21 be vibrating device, and 22 be bulky grain ore, and 23 be small
Grain ore, 24 be insulation vibrating arm.
Fig. 2 is the scanning electronic microscope observation figure of the standard crushed product of magnetic iron ore.
Fig. 3 is the scanning electronic microscope observation figure of the high electric field pulse crushed product of magnetic iron ore.
Fig. 4 is the scanning electronic microscope observation figure of the standard crushed product of extreme poverty hematite.
Fig. 5 is the scanning electronic microscope observation figure of the high electric field pulse crushed product of extreme poverty hematite.
Embodiment
The utility model is described further with reference to embodiments.
The broken equipment of high electric field pulse electric discharge of embodiment use of the present utility model carries out broken used to ore
Device is identical with the structure that foregoing utility model content is described, and carries out ore reduction using the device, analyzes crushed product
Each grade yield and tenor, liberation degree of minerals, microscopic appearance, and it and Mechanical Crushing product are contrasted.
Embodiment 1
The sample ore that the present embodiment uses is The Great Hermit Hill magnetic iron ore, and its main chemical compositions is as shown in table 1.It can be seen by table 1
Go out, valuable element is iron in raw ore, and TFe grades are that 32.61%, FeO contents are 17.49%；Major impurity is SiO2, account for
45.77%；Objectionable impurities S, P content are relatively low.The chemical phase analysis of raw ore Fe elements is shown in Table 2, as shown in Table 2, iron in ore
Mainly exist in the form of magnetic iron ore, iron occupation rate is up to 79.70% in magnetic iron ore, secondly with siderite, red (brown) iron ore and silicon
The form of sour iron is present, and exists on a small quantity in the form of iron sulfide.
The raw ore chemical composition analysis of table 1/%
Chemical phase analysis result/% of the iron in ore element of table 2
The Great Hermit Hill magnetic iron ore is crushed with high electric field pulse electric discharge ore crushing apparatus.+ 30mm contents are accounted for 70% 500Kg ore deposits
Stone feeds high electric field pulse equipment cylindrical drum, in electrode spacing 100mm, discharge voltage 60kV, persistently ore is discharged and crushes 400
It is secondary, deenergization, breakdown products under collection screen after the completion of electric discharge.The ore of same weight is marked with roller pair breaking crusher machine
Quasi- breakdown products, contrast the characteristic of two kinds of breakdown products.
Two kinds of breakdown products are carried out with size exclusions and carries out each grade contain Fe and Ti, the results are shown in Table 3 and table 4.
The size distribution of the standard breakdown products of table 3 and each grade product TFe grades
The size distribution of the high electric field pulse breakdown products of table 4 and each grade product TFe grades
From table 3 and table 4, the fine fraction content of high electric field pulse crushed product is higher than standard crushed product, -1mm's
Content brings up to 29.19% by 20.35%, and TFe grades bring up to 35.72% by 34.92%.This explanation high electric field pulse
Broken equipment can more efficiency crushing ore, while improve the content of valuable mineral.
This research and utilization SEM is observed the reduzate microscopic appearance of magnetic iron ore, as a result sees accompanying drawing
In Fig. 2 and Fig. 3.
As shown in Figure 2, the roller pair breaking product of magnetic iron ore, valuable mineral magnetic iron ore is cracked, i.e., transcrystalline crushes；By scheming
3 are understood, the high electric field pulse of magnetic iron ore is broken to be dissociated along mineral grains interface, keeps original form of valuable mineral.
Embodiment 2
The sample ore that the present embodiment uses is derived from the extreme poverty hematite in the Mining Limited Company ore dressing plant of saddle thousand, and its is main
Chemical composition is as shown in table 5.As can be seen from Table 5, main metal element is iron in extreme poverty hematite, and TFe grades are
19.34%, belong to extreme poverty hematite.Wherein FeO grades are 0.68%, it is known that magnet mineral content is less in ore.SiO2Contain
Amount up to 75.18%, it is silica to illustrate main gangue mineral.Secondly Al2O3It is respectively 0.17% He with content of MgO
0.28%, other constituent contents are relatively low.
The raw ore chemical composition analysis of table 5/%
Extreme poverty hematite is crushed in use for laboratory high electric field pulse electric discharge ore crushing apparatus.Granularity+20mm contents are accounted for
85% 500Kg ores feed high electric field pulse equipment cylindrical drum, in electrode spacing 100mm, discharge voltage 80Kv, persistently to ore deposit
Stone electric discharge is broken 600 times, deenergization, breakdown products under collection screen after discharging completely.The ore of same weight is broken with two pairs of rollers
Broken crusher machine obtains standard breakdown products, contrasts the characteristic of two kinds of breakdown products.
Size exclusion experiment is carried out to two kinds of breakdown products and each grade iron content measurement result is shown in Table 6 and table 7.
The size distribution of the standard breakdown products of table 6 and each grade product TFe grades
The size distribution of the high electric field pulse breakdown products of table 7 and each grade product TFe grades
From table 6 and table 7, the fine fraction content of high electric field pulse crushed product is high compared with standard crushed product, -0.1mm
Content bring up to 24.73% by 21.96%, and TFe grades bring up to 23.33% by 22.50%.This explanation high-tension electricity arteries and veins
Breaking through broken equipment can more efficiency crushing ore, while improve the content of valuable mineral.
This research and utilization SEM is observed the reduzate microscopic appearance of extreme poverty hematite, as a result
See Fig. 4 and Fig. 5.
As shown in Figure 4, crackle is that occur at random in the roller pair breaking product of extreme poverty hematite, is realized brokenly by mechanical force
Broken, the partial fracture in ore is not along bloodstone-quartzy interface.And as shown in Figure 5, extreme poverty hematite is through high electric field pulse
Broken rear ore particles fracture crack is more coarse and with vestige and stomata is burnt, and this explanation is in high electric field pulse shattering process
Hot environment in the discharge channel that middle bloodstone-silica interfaces are formed be present, aggravate ore particles fragmentation；And make broken edge
Mineral grains interface is dissociated, and keeps original form of useful constituent.
Claims (2)
1. a kind of high electric field pulse ore crushing apparatus for ore pretreatment, it is characterised in that described device is mainly by power supply
(1), single-phase voltage regulator (2), exchange ignition transformer (3), six voltage doubling rectifing circuits (4), super-pressure ceramic capacitor (5), copper
Rod (6), high-field electrode (7), conductive cylinder (8), electric discharge muck bucket (9), vibration screen (10), dielectric (11), to ore storage bin
(12), dielectric storehouse (13), earth lead (14), solid-liquid separator (15), product collector (16), gas switch (17), height
Wire (18), insulation bung (19), dielectric circulating line (20), vibrating device (21), insulation vibrating arm (24) composition are pressed,
Wherein, power supply (1) is general power supply unit, and power supply (1) is connected with single-phase voltage regulator (2), single-phase voltage regulator (2) again with
Exchange ignition transformer (3) is connected, exchange ignition transformer (3) output six voltage doubling rectifing circuits of termination (4), six voltage multiplying rectifiers
Circuit (4) output end is connected with the input of super-pressure ceramic capacitor (5), the both ends of super-pressure ceramic capacitor (5) with
The both ends of gas switch (17) are in parallel, and the high-voltage rectifying oscillating circuit that can export high electric field pulse, high pressure are constituted with this
The output end of rectification oscillating circuit is connected with high-voltage conducting wires (18), and one end of multiple copper rods (6) is connected in parallel on high-voltage conducting wires (18)
On, the other end of copper rod (6) is provided with high-field electrode (7), and copper rod (6) insulating mounting is held within muck bucket (9) top of discharging
On the insulation bung (19) in portion, and one end for being provided with high-field electrode (7) of copper rod (6) is placed in electric discharge muck bucket (9)；Put
The outer layer of electric muck bucket (9) is made up of insulating materials, and the liner of electric discharge muck bucket (9) is inlaid with conductive cylinder (8), and discharge muck
The top of bucket (9) is tubular, and bottom is back taper, is provided with vibration screen (10) in place of the transition of tubular and back taper, discharges
Vibrating device (21) is fixed with the side wall of the upper portion insulating part of muck bucket (9), and is shaken with vibration screen (10) by insulation
Lever (24) connects；The conical lower portion of electric discharge muck bucket (9) is connected by discharging opening and conveyance conduit with solid-liquid separator (15)
Logical, solid-liquid separator (15) is followed by product collector (16) and dielectric circulating line (20), the upper side of electric discharge muck bucket (9)
Dielectric entrance and ore inlet are had on wall, wherein, dielectric entrance is connected by pipeline with dielectric storehouse (13),
Ore inlet is connected by the way that chute or feeding belt are same to ore storage bin (12)；One end of earth lead (14) passes through electric discharge muck bucket
(9) the outer layer conductive cylinder (8) internal with electric discharge muck bucket (9) is connected, and the other end of earth lead (14) is directly grounded
Form the loop of whole circuit.
2. high electric field pulse ore crushing apparatus according to claim 1, it is characterised in that electric discharge muck bucket (9) outer layer by
Nylon material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720339878.7U CN206661389U (en) | 2017-03-31 | 2017-03-31 | A kind of high electric field pulse ore crushing apparatus for ore pretreatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720339878.7U CN206661389U (en) | 2017-03-31 | 2017-03-31 | A kind of high electric field pulse ore crushing apparatus for ore pretreatment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824455A (en) * | 2017-03-31 | 2017-06-13 | 东北大学 | A kind of high electric field pulse ore crushing apparatus and method for ore pretreatment |
| CN106944224A (en) * | 2017-03-31 | 2017-07-14 | 东北大学 | A kind of high electric field pulse ore crushing apparatus pre-processed for ore |
| CN110215986A (en) * | 2019-07-05 | 2019-09-10 | 东北大学 | It is a kind of to strengthen the high electric field pulse preprocess method that scheelite is broken and sorts |
| CN110215985A (en) * | 2019-07-05 | 2019-09-10 | 东北大学 | One kind crushing pretreated high electric field pulse device for ore |
| CN111229423A (en) * | 2020-03-13 | 2020-06-05 | 中国矿业大学 | Continuous high-voltage electric pulse ore crushing device for multi-metal ore step-by-step enrichment |
| WO2021004189A1 (en) * | 2019-07-05 | 2021-01-14 | 东北大学 | High-voltage electrical pulse pretreatment method for reinforcing galena crushing and sorting |
-
2017
- 2017-03-31 CN CN201720339878.7U patent/CN206661389U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824455A (en) * | 2017-03-31 | 2017-06-13 | 东北大学 | A kind of high electric field pulse ore crushing apparatus and method for ore pretreatment |
| CN106944224A (en) * | 2017-03-31 | 2017-07-14 | 东北大学 | A kind of high electric field pulse ore crushing apparatus pre-processed for ore |
| CN106944224B (en) * | 2017-03-31 | 2019-07-23 | 东北大学 | One kind being used for the pretreated high electric field pulse ore crushing apparatus of ore |
| CN106824455B (en) * | 2017-03-31 | 2022-05-20 | 东北大学 | Application method of high-voltage electric pulse ore crushing device for ore pretreatment |
| CN110215986A (en) * | 2019-07-05 | 2019-09-10 | 东北大学 | It is a kind of to strengthen the high electric field pulse preprocess method that scheelite is broken and sorts |
| CN110215985A (en) * | 2019-07-05 | 2019-09-10 | 东北大学 | One kind crushing pretreated high electric field pulse device for ore |
| WO2021004189A1 (en) * | 2019-07-05 | 2021-01-14 | 东北大学 | High-voltage electrical pulse pretreatment method for reinforcing galena crushing and sorting |
| CN110215985B (en) * | 2019-07-05 | 2021-06-01 | 东北大学 | High-voltage electric pulse device for ore crushing pretreatment |
| CN111229423A (en) * | 2020-03-13 | 2020-06-05 | 中国矿业大学 | Continuous high-voltage electric pulse ore crushing device for multi-metal ore step-by-step enrichment |
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Granted publication date: 20171124 Termination date: 20210331 |